<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			div {
				width: 100px;
				height: 100px;
				line-height: 100px;
				text-align: center;
				color: white;
				background-color: red;
				border-radius: 50%;
			}
			div:nth-child(1) {
				animation: move 2s linear 2s normal;
			}
			div:nth-child(2) {
				animation: move 2s linear 2s backwards;
			}
			div:nth-child(3) {
				animation: move 2s linear 2s forwards;
			}
			div:nth-child(4) {
				animation: move 2s linear 2s both;
			}
			@keyframes move {
				from{ 
					transform: scale(0);
				}
				to{ 
					transform: scale(1);
					background-color: green;
				}
			}
		</style>
	</head>
	<body>
		<div>normal</div>
		<div>backwards</div>
		<div>forwards</div>
		<div>both</div>
	</body>
</html>
